* Warn the user that fields with no value and not it the field template list
  will be removed from the component before exiting the edit component in
  schematic dialog.
* Add a function to TEMPLATES class to check if template list contains a
  field with a given name.
* Move the function to display the edit component in schematic dialog into
  the SCH_EDIT_FRAME class.
* Doxygen and coding style policy fixes.

* Improve main (top) toolbar button organization.
* Add commands from main toolbar to menubar that were not already defined.

* Add USE_IMAGES_IN_MENUS definition to override the default platform
  behavior for adding images to menu items.
* Update COMPILING.txt to document how to use USE_IMAGES_IN_MENUS.
* Fix Windows segfault when creating language selection submenu introduced
  by new bitmap code in r3087.
* Changed per email from JP from CVPcb to CvPcb because I'm getting old and
  blind and misread the email.
* Lot's of Doxygen comment and coding style policy fixes.

* Check user write permissions before saving project, board, and footprint
  library files.
* Append read only to file name and path in title bar when the user
  does not have write privileges.
* Rename class WinEDA_ModuleEditFrame to FOOTPRINT_EDIT_FRAME.
* Lot's of Doxygen comment and coding style policy fixes.

* Check user write permissions before saving project and net list files.
* Append read only to file name and path in title bar when the user
  does not have write privileges.
* Don't display file dialog every time the net list or project file is
  saved.
* Add save as and save project file as commands.
* Make capitalization of CVPcb consistent in all user strings.
* Doxygen comment and coding style policy fixes.

Pcbnew: finish work on Length Die (displays track length, and fulll  length and length die for tracks ending on pads having a length die > 0 )

* Check user write permissions before saving project file.
* Append read only to file name and path in title bar when the user
  does not have write privileges.
* Remove displaying file dialog every time the project file is saved.
* Doxygen comment and coding style policy fixes.

Minor fixes and enhancements.

* Add general purpose user write permission test function to base
  window class.
* Check user write permissions before saving project, schematic and
  library files.
* Remove displaying file dialog every time the project file is saved.
* Display absolute paths for non-root sheet file in title bar.
* Remove redundant command table entry from schematic editor.
* Remove unused variables to fix GCC 4.6 warnings.
* The usual Doxygen comment and coding style policy fixes.

* Disable save library command when user does not have permission to write
  the active library.
* Append the active library file name displayed in the title bar with read
  only when the user does not have write permission.
* Test the selected folder permissions when user chooses the save library
  as command.
* The obligatory coding style policy fixes.

zone to zone DRC 'clearance' policy/setting now comes from ZONE_CONTAINER::GetClearance(), a virtual override, and is currently ignoring the netclass setting and using only the m_ZoneClearance settting, see ZONE_CONTAINER::GetClearance() to adjust policy.

pcbnew's footprint editor was not injecting the m_LocalClearance setting back into an existing board after a module edit

Store the name of modedit active(/current/working?) library in a static variable. Edit some modedit strings.

Pcb calculator: add track width versus current and electrical spacing versus voltage tools (from IPC 2221)